It might not show up on the app yet because there are no episodes (or episode placeholder) yet since it doesn't start on Crunchyroll until later today. There is a page up already on the website though-- /dragon-ball-super

My bet is that we will only start seeing Dubbed versions of the older episodes at first. I think that the article about the deal between Funimation and Crunchyroll said something about any dubbed versions being a few weeks behind the episode release. So I am betting that when they add Episodes 1-10~ next week those might have dubbed versions as well, and maybe in the 4th or 5th week we might get to the point where the dubbed versions are 2-3 weeks behind. That's just my random guess though.